<!DOCTYPE html>
<html>
    <head>
        <meta charset='utf-8' />
    </head>
    <body>
        <table border=1 width=300 height=300>
            <tr>   <td>姓名</td>       <td>性别</td>         <td>年龄</td>   </tr>
            <tr>   <td>张三</td>       <td>男</td>           <td>20</td>   </tr>
            <tr>   <td>李四</td>       <td>女</td>           <td>21</td>   </tr>
            <tr>   <td rowspan=2>王五</td>  <td>女</td>      <td>23</td>   </tr>
            <tr>   <!--<td>赵六</td>-->  <td colspan=2>男</td>  <!--<td>23</td>-->   </tr>
            <tr>   <td colspan=3>田七</td>  <!--<td>男</td>  <td>21</td> -->  </tr>
        </table>
    </body>
</html>